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BiologyInhabit swamps or flooded grounds where the aquatic and riverine vegetation are dense and the water is either clear or silty. Its color is deeper in clear water (Ref. 35237). One of the most popular of all the tropical aquarium fish. Maximum length 15 cm TL (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; keep pairs in small tanks for breeding; minimum aquarium size 100 cm (Ref. 51539).